Stoker



Nov. 9, 1943.

W. T. HANNA sToxEn Original Filed Nov. 6l 1928 3 Sheets-Sheet 1 nu I INVENTOR mysan Hanna Qw'w v- ATTORNEYS Q William T/zo BY @2u/ unfm ' Nv.9, 1943. w T ANNA 2,334,090

sToxER l original Filed Nov. e, 192sv s snets-sheet 2 ATTORNEYS Nov. 9, 1943. w. T. HANNAA STOKER 6, 1928 3 Sheets-Sheet 3 Original Filed Nov.

l INVENTOR lliam Thom/uson Hanna Y ATTORNEYS ninnatt ohm.

v November6,1928i71Serial4o. Y j

l' $17,621. Divided and thisapplicaticnlAugust This invention relatesV4 to stokers l in;` generali' but lmore particularly-to 'stokers foriuseilon'locomotives andthelike, f

This application is a division of. my copending application `Serial No..317,621,1led'November 6,

fuel conveying means which comprises a plurality of conveyers individually` connected ato `*driving means externally ,ofi `thexconduits inlfwhich ,the conveyersoperate.. AL f Y .Another object ofitheoinvention isvftofprovide a conveyer tov feed lfuel tothe crushingdevice, said conveyer ,being power driven Ythrough fa connection at its delivery end. l z H These and other l advantages are: attained by the means describedin' the followingspecication and disclosed in the accompanyingidrawings whereim:

Fig. l shows a sectiona'lvview ofia stoker mechanism embodying this 'inventionffand taken sube l stantially on a longitudinal c'enterline.`

Fig. 2 is a plan View lof the mechanismshown in :ugr o c .A A

Fig. 3 is an external view'of -the"entire,stoker mechanism as viewedlfromtheside oppositel to Fig. l. y i i 4 Fig. l shows a modiiication in the. arrangement of the conveyers as shown in Fig. 1.

1n the ydrawings the back-head of a locomotive iireboxiis represented'by the numeral `l iLthe firebox having the usualgrate barsI i| and firing opening l2. Embracing :said opening-and rigidly mounted on the outer facelof the" back-head is a fuel supply housing i3, Which,isiprovided..-With a delivery opening IS-b coinciding substantially with theV :firing `openingV -I2." Substantially-fin alignment withv the opening I 3yr-fb 'the Opposite wail of said housing, is an o'peningpl3-i-jcnfvvhich is embraced by aconventional Vformioffilrefdoor plate M, havingv anyopeningvIM-a which: serves as a nre-door openinggland; upon Whchplate may be mounted the; usual automatic ire-doorainot Vthe fuel to pack is minimized;` l

*"The. lower portionl of Athe housing1 .i3l is arranged in 'the forrniof cylindrical conduit! I?"-c` which surrounds thedelivery` 'end` of la? conveyer 23,` the main .portionuof Whichlit rotatively4 supported in a conduit `24 lforming part'of a' sub-housing 241m rigidly :secured toiE the:` housing 1I 3 fand Vhavingfla'n opening substantially flushawithl the deck 3253er the'locomotive, throughwhich fuel may behandied..directly .td-the: conveyernz 3".if desired. lPositioned; Withinftheisub `-housing` 2N-" isi-the 'delivery' end of 'a Aconveyer 261W`hichiis: rotatively supported 'ini a housingl orzconduit 2T, the lforward end of `vvhichhas :a universal connection withthe sub-housing 241a'below1 thedeckof thelocomotive. The opposite end of the conduitlfisslidablyV surroundedgby a 'member 28 Which is farrangedetoH have "f a :l universal :connection with 'I a housing `or conduit 29 rigidlysecured to the'front fac'eofthe'tender hopper 30. l `'Ihe:,design. and construction'of the housing or conduit `,29 is ofsuch a ch'aracterthat thacrossshown), such as fior example fthe Franklin buttersection'al ,areaof the chamber Within said conduit increases from theientranceat the tender 'hopper end "to the; portion which. surrounds the member '428,'` thus the fuelpassing through the conduit 29 isroifered greater `freedom as itapproaches the conveyer 2B with the result that` the tendency of ,Theptender hopper 30 is preferably in the form of a ,trough and is `mounted in anyfsuitable manner uponthe tender 3|, and in this instance is preferablya'rranged to incline toward the deliv` eryfend. Above the tender. hopper 30 islthe usual tender deck 3|.-a arranged 'so asto permit variousiareasthereoito discharge Vfuelinto said hop-` pen Rotatively. supported Within the trough of the tender *hopper-,Buis a conveyer 32 which has its delivery end partiallysurrounded` by a crushing' member 33 whichmay' be'of ariyfsuitable'character, but in this instance isshown as being rigidly secured to the 'inside' front face 'of Lthetender' hoppernsTheihub portion ofithe conveyer 32 is extended beyond thevdelivery lend thereof and has a universal connection Withr the shaftvSlijournaled in the` Wall of the conduit 29,1and the opposite endfof the conveyeris'preferably coniined inthe trough by `means of 'a retaining plate lrigidly secured tothe trough 30. ',Tl1ev operating mechanismffor the conveyers 23; 2,5` andV 32 may belof fanyl suitable character,

but'inthisinstance Il. have shownit as comprising. a" poweredevicefinithe fform :of .a steami motor 36.4 like .,that; disclosed in my U.- SJ Patent No3.'

1,577,462 in which the primary transmission element comprises a rack and pinion andv it is this form of primary transmission element that I Vprefer to have embodied in the power device for able shaft 31 universally connected at one end..

to the power-device and similarly connected at its opposite end with a shaft 38 suitably supported for rotation on the tender hopper. `A gear 33 is rigidly secured to the shaft 38 arid meshes with a gear 40 rigidly secured to ai shaft 4l 'suitablyr journaled on the conduit 29.1 'The-gear 39 'also"- 1. A locomotive'stoker mechanism for conveyf meshes with a gear 42 rigidly secured tothe shaft 34. The-shaft 4| is operatively connectedv with n the conveyer 23 by means of a suitable shaft 43.

A1so,rigidlysecuredto theshaft 38 is algear44 which meshes with a gear 45 rigidly secured '-to a-shaft 46-suitablyvjournaledon the tender hopper 30'. f. The shaft: 4,6- is operatively connected tothe conveyer ZSbyf-gmeans ofthezshaft 41.

The power-device,` of whatever character, preferably should Vbey provided with. a control lever such-.as the :lever 48-.for,starting ;andstopping rotation of the conveyers'., L ya Y Such af stoker is preferably provided; with means tomore eiiicientlyr distribute the 4coal after it has passed throughthe ringropening I2 and for this purpose, I prefera blast chamber Aofsuit-f able-type as 49 andv a' distributor plate 50`positioned at the entranceof the kireboy. .immediately `below the delivery-'opening ,l-.fbzof the housingl3.` .L

' As shown in Fig. 1, itwill benoted that as the fuel` leaveslthe delivery; end of the-conveyer 26, it falls by gravity rupon the conveyer 23 by which it is carried into thehousing. I3. Inifa modified' form of the conveying mechanism, as shown'in Fig. 4, I'. have arranged for feedingthe fuel upwardly to aconveyer 5l which carries the fuel into the housing I3. -.In this modification, .the conveyer' 5I is mounted in' a conduit'52 which forms a portion of'a.sub-housing 53rigidly securedto thelhousing |3.and having `an opening therein substantially vflush with the deck of the locomotive, through lwhi'chifuel may be handfed directly to'y the conveyer 5l ifdesired. On the underneath side of .thesub-housing 53 isv a housing or .conduit-,1.54, universally connected thereto, the saidconduit surrounding the delivery end of a1 'conveyer 55 whichis mounted forirotation in a conduit 55, rigidlysecuredto the conduit 54, and having sliding'engagement in a member 51 which is arranged vto have `universal engagement with a conduit .58, rigidly secured Ato the front face' of the=tender1hopper"33 and similar to the conduitrf29 previouslyreferred to. The. conduit 54 may be.provided,` on the under.` sida-with an opening, .normally lclosed as by;a lid `54'a., -by means of whichthe conduitmay befemptied of fuel when desired... L i? I vThe mechanism for.' operating this modified form of conveyingzmechanism, is similar to that previously described and shown, "and comprises the shaft 31 -operatively connected to theshaft 38v which in Aturn iswge'ared to .the shaft l 34 by means Vof the gearsziif and 42, the shaft. 38 also being vgeared'. to -f the shaft .46` by means-ofithe gearsIMlY and45 and the latter in1turn.operaA tively, connected to .the conveyer 55. by meansifof the shaft. 41;'1-but in this instance, the Vconveyer 5I is operatively connected to the shaft 34 by means of a shaft 59.

The operation of thefstoker mechanism comprises the delivery of the fuel from the tender to the locomotive by the'conveyer 26 or the conveyer 55 and its reception therefrom bythe conveyer 23 orthe conveyer 5l by which the fuel is y.

carriedvinto the housing Hand forced upwardly therein so iasy to f low over-thefacets of the mem.v Y

bers l5 va.r1d"l6"and subsequently falling upon vand flowing over the blast chamber 49 and the distributor plate 50.

SCpe. of the Subjoined claims.

Iclaini: wi

ing fuel from a tender to a fire box comprising in combination, a hopper beneath said tender adapted to receive fuel therefrom, a screw conveyor in lsaidhoppernhaving a-gear drive .iatits forward end onlyga conduit forward of said :hopper for del livering fuel to said fire box,. a` secondv screw conveyor in said conduit havingv its rearward end operatively .connectedfwith the forward endl-,lof W said flrstfmentioned conveyor-fwhereby,said. gear drive lies between the conveyors, a transfer con-5 duit connecting the delivery endof said hopper with thefrearwardend of said first conduit.` to

adaptedto receive'fuel therefrom, af screw conveyor..in said hopper having a-gear drive at its forward end only, a conduit forward of .l said" hopper for deliveringffueltofsaid nre box, afsecondscrew conveyorin: said..` conduit having its rearwardzend operatively connected withy the forv Ward end of said'first-mentioned` conveyor where-y f .A by said gear drive lies between the: conveyors, a Y

- transfer conduit connecting thek delivery/'endof said :hopper with' the rearward -end of .said first conduit totransfer. the fuel around said gear'drive,

' a conveyor in said transfer conduit for moving yfuel therethrough,r ai'geandrive' at the rearle'nd of lsaid .last-mentioned conveyor, and means form- `ing a `geared .connection'between said gear drives whereby all of said conveyors are operated; upon actuationv of said first-mentioned gearxfd'rive..

3. Alocomotive,stokermechanismzfor conv'ey-r ing fuel from the tender to thelring openingv in .a locomotive cabA comprising, in combination, a

hopper beneath the deck of said tender adapted Y to 'receive fuel from the `tender bin, a screw,k con veyorin said hopper having a gear drive at its forward end, a transfer conveyor having its delivery end beneath the locomotive cab. and its receiving end near thefforwardend of said first conveyor, a gear drive, at one end of the :transfer 4. 'A locomotive' stoker mechanism for conveying yfuelfrom-the tender `to the ring opening in a locomotive .cab yccr'nprising,"in combination, a hopper beneath the deck l of y said. tenderA adapted to receive-fuel from thetender bin, alscrewcon-v r'It will be understood that the `invention may 1 vbe variously modified and embodied within the veyor in said hopper, a transfer conveyorV having its receiving end adjacent the forward end of'said screw conveyor and its delivery'end beneath the locomotive cab, a third conveyor beneath the 1ocomotive cab and above the delivery end of said transfer conveyor, gear drives for said screw conveyor and transfer "conveyor located at' the forward and rearward ends thereof respectively, means forming a driving connection between the forward end of said screw conveyor and the rearward end of said thirdconveyor, means for driv- Y ing a 1delivery opening therein, a'transfer condiutrfiexibly connected to said hopper adjacent said delivery opening so as to receive the flow of 4 fuel therefrom, a transfer screw conveyor rotatably mounted in said transfer conduitthe forward ends of said transfer conduit and screw conveyor terminating adjacent the locomotive cab, a

' rotary drive for the frontend of said hopper con` ing one of said gear drivespand means forming veyor-,fa rotaryl drive for the rear end of s aid transfer conveyor, means for driving said first-mentioned rotary drive to rotate said hopper conveyor, gear means including a shaft rotatably mounted on `said hopper and connected to said driving means for operation thereby, and means for universally connecting said shaft with the rotary drive on said transfer conveyor wherebyoperation of said. driving means effects rotation of both the hopper conveyor and the transferconveyor.

WILLIAM THOMPSON HANNA. i 

